Ignore the bronze armor, if you are able to upgrade your troll armor as far as possible at that point. Idk about the math but those 6 armor points can be neglected at this stage. Except if you have like a chest full of bronze, but you will still be 10% slower if you wear the upper and lower armor parts - which you will notice.
And yes, it's a good idea to get a bronze mace (until you get the iron one) and level blunt weapons, will be useful even into the next biome.
Also, personally I will always craft myself the iron armor since I'm dumb and slow at times :D For players playing the different biomes for the first time, I'd say it cannot hurt and might be safer to do so as well. Especially since you probably don't know yet what to expect in the following biome.